Traxxas T-Maxx Classic Operating instructions

Traxxas
Brand
Traxxas
Model
T-Maxx Classic
Category
Toys & accessories
Type
Operating instructions
1. Remove Engine: Disconnect all EZ-Start wires from the EZ-Start motor and the engine. Note: The yellow wire from the wire
harness will be accessible after the engine is lifted from the chassis. If using a TRX 2.5 engine with pull start, remove the
EZ-Start wiring harness from the chassis completely. Disconnect the fuel line from the carburetor and disconnect the pressure
line from the exhaust pipe. Remove the throttle and brake linkage (including the throttle servo horn and brake lever) completely
from the chassis by removing the 3x6RST screw from the throttle servo and loosening the 3x3GS at the top of the brake cam.
Remove the engine and exhaust system from the chassis by removing the four 3x10CS engine mount screws from the bottom
of the chassis and the 3x10CM screw with 3.0NL nut that fastens the pipe hanger to the chassis. Keep the screws, they will be
reused with the new pipe hanger.
2. Transfer Components: Remove the engine mount and the clutch assembly from the TRX Pro.15 engine and reinstall them
onto the TRX 2.5 engine. (see diagram for parts sequence and orientation). Note: The clutch adapter nut from the TRX Pro.15
engine will not be reused. Use the flywheel nut (included with the TRX 2.5 engine) to secure the flywheel to the crankshaft.
3. Exhaust: Join the header and exhaust pipe (included) together with the blue silicone pipe coupler and secure with two
120mm tie wraps. Make sure that there is (one) 12.2x1.0mm orange o-ring mounted onto the exhaust outlet of the TRX 2.5
engine case (for engines without the o-ring, use the o-ring included in the package). Install the header and exhaust pipe assembly
onto the TRX 2.5 with the two 3x15CS header bolts (see diagram). Tighten the header bolts to 6.2 ft-lb of torque, being careful
not to over tighten. Note: If using the EZ-Start 2 starting system (optional), remove the pull starter from the engine and install
the EZ-Start 2 system onto the engine. Note: On older style fuel tanks, replace the straight pressure fitting on top of the tank
with the 90 degree pressure fitting (included) to clear the EZ-Start 2 starter motor.]
4. Drill Holes for Throttle Bellcrank: Disconnect the shift linkage from the shift fork shaft. Disconnect the rear drive shaft from the
transmission output shaft by removing the 4x5yoke pin. Slide the drive shaft back toward the rear and leave the shaft attached
to the rear differential. Remove the eight 3x12RM screws (located in the chassis braces) that secures the transmission to the
chassis (see diagram). Lift the transmission from the chassis to make room to drill the holes for the throttle bellcrank assembly.
Cut out and place the included throttle bellcrank post template onto the chassis (see diagram for orientation) and mark the
indicated bellcrank post holes onto the chassis. Drill holes into the chassis, where marked, with a 3.0mm (1/8”) drill bit (included).
Make sure that the front differential drive shaft is keyed into the front transmission drive shaft and set the transmission back into
the chassis. Secure the transmission to the chassis with the eight 3x12RM screws. Reconnect the rear drive shaft to the output
shaft of the transmission with the 4x5 yoke pin. Reconnect the shift linkage ball cup to the shift fork shaft.
5. Linkage: Locate the carburetor bellcrank post and the throttle/brake linkage assembly. Mount the carburetor bellcrank post
onto the chassis and secure it with the 3x10WM screw. Note: The 3x10WM screw enters through the center hole that was
drilled in step #4. Connect the throttle link into the upper bellcrank arm. Connect the carburetor link into the lower bellcrank
arm. Slide the brake lever into the brake cam, with the eyelet pointing up, and secure it by tightening the 3x3GS (see diagram
for orientation). Note: The throttle servo reversing switch (CH2) on the transmitter must be switched opposite of the stock
position for proper rotation of the servo output shaft. Turn on the radio system, center the throttle trim, and attach the new
servo horn onto the throttle servo. Note: Mount the servo horn onto the servo so that when the throttle trigger is at neutral,
the carburetor is at the idle position.
6. Installation: Install the engine (with the exhaust system and clutch assembly) onto the chassis leaving the engine mount
screws just loose enough to adjust the gear mesh. Adjust the gear mesh by sliding the clutch bell gear all the way up to the
spur gear and then back off just slightly until the gears spin freely together. Secure the assembly by tightening the four
3x10CS screws. Attach the ball cup from the carburetor link onto the throttle arm of the carburetor. Reattach the fuel and
pressure lines to the carburetor and exhaust pipe (shorten the fuel line from the tank to the carburetor if needed). Note: If using
the EZ-Start 2 system (optional), connect the wiring harness to the appropriate contacts on the EZ-Start motor and engine.
Install the new pipe hanger onto the chassis using the existing hardware (3x10CM and 3.0NL) saved from Step 1. Secure the
exhaust pipe to the pipe hanger with the 3x10WM screw.
7. Airfilter: Install the air filter onto the carburetor and secure it with a zip-tie. Turn on the radio system and adjust the throttle
trim and brake linkage for proper operation. Follow the proper break-in procedure per instructions for the new TRX 2.5 engine.
This completes the conversion.
Important: Due to the high power output of the new TRX 2.5 engine, the two speed transmission may now shift too early.
Follow the instructions in the T-Maxx manual for proper shift adjustment.
Traxxas
1100 Klein Road
Plano, Texas 75074
1-888-TRAXXAS
E-Mail: support @ Traxxas.com
021209
The TRX 2.5 engine model #5207 with pull starter is required to complete this conversion.
Part #4900 T-Maxx Conversion Instructions
TRX 2.5 Racing
Engine Conversion
3X10WM
3193
5256
3x15CS
5142
5140
Header
3155
3155
Pipe
Clutch Bell
Flywheel Nut
Carburetor
Link
5246
Exhaust Coupler
5152
3296
(Fitting Only)
5146
3x15CS
5142
5140
5256
O-ring Gasket
TRX 2.5 Conversion Kit Assembly
2745
3.0NL
2745
3.0NL
2745
3.0NL
2743
3.0GS
3182
3182
3184
2682
3x8RST
3182
3180
3180
2743
3.0GS
2743
3.0GS
2746
3x6MW
5168
Throttle Link
5168
Brake Link
3159
3x10 CS
021125
3182
5167
5167
3193
3x10WM
3193
3x10WM
3x10CM
3x12RM
Shift
Linkage
Shift Fork
Shaft
Brake Cam
Brake Lever
1985
5x8x.5TW
2545
5x8x2.5PB
2545
5x8x2.5PB
5168
4927X
M4/14.5
Engine
Mount
Servo Horn
Screw Abbreviations
3x12mm Roundhead Machine Screw
Questions?
Call 1-888-TRAXXAS
Bellcrank Post Drilling Template
Front
Drill Here
Part #4900 Conversion Kit Assembly
Chassis Drilling Template
Rev. 021125
  • Page 1 1
  • Page 2 2
  • Page 3 3

Traxxas T-Maxx Classic Operating instructions

Traxxas
Brand
Traxxas
Model
T-Maxx Classic
Category
Toys & accessories
Type
Operating instructions
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents